Document pedantic debug mode typo (was Re: GCC 3.4.4)

[Paolo Carlini]

Jonathan Wakely wrote:

>Mark already approved the patch below (including for 3.4) and I committed
>it to 3.4 just now.  Any v3 people have objections to putting it in on
>mainline too?
>
>The typo is fixed on the 4.0 branch and mainline but Mark said (in a
>private mail) that it's not worth fixing on the 3.4 branch, so the
>the affected versions are likely to stay as 3.4.x (for all x) and 4.0.0
>
I saw the doc patch and believe is really a good idea (as the original
fix ;) for 3.4.x. On the other hand, the problem is already fixed for
4.0.1 and mainline and I'm afraid could be a little misldeading having
it in the very same release (4.0.1) that fixes it! Even more so for 4.1.0.

Can you propose a rewording that would make crystal clear that 4.0.1 and
later don't need the additional -D? I would suggest something like (but
please improve the english itself): "N.B. In GCC 3.4.x and 4.0.0, due to
a bug, <code>-D_GLIBXX_DEBUG_PEDANTIC</code> was also needed. The
problem has been fixed in GCC 4.0.1 and newer."

Paolo.